Zabbix extension that reports various HDD status using various tools
This extension uses not only smartctl (smartmontools) but other available tools to determine the existance of an HDD and as much as possible of its status.
As a Zabbix "auto-discovery" process, these results can reflect changes in available HDD in near-to-real-time.
noflushd is a Linux daemon that monitors disk activity and spins down idle disks. It then blocks further writes to the disk to prevent it from spinning up again. Writes are cached and flushed to disk when the next read request triggers a spin-up.